After launching the Toyota bZ4X in 2022, Toyota expects to unveil its first mass-produced EV with a solid-state battery by 2025. In 1991, Sony introduced the Lithium-ion battery to the world. This new technology from the Japanese revolutionized the way we use batteries. Three decades later, Toyota and Panasonic hope to introduce the next generation of battery technology for automobiles.
Prime Planet Energy & Solutions
In February 2020, Toyota and Panasonic announced the establishment of a new joint venture company called Prime Planet Energy & Solutions, specializing in automotive prismatic Lithium-ion batteries. The JV company’s business scope includes the development, manufacture, and sales of solid-state batteries and other next-gen automotive batteries.
The two companies established Prime Planet Energy & Solutions in April 2020 amidst the COVID-19 pandemic. Toyota owns 51% of the JV company, and the remaining ownership is with Panasonic.
Koji Toyoshima, Deputy Chief Officer of Toyota ZEV Factory (Japan), Toyota, confirmed in December 2020 that Toyota and Panasonic are working on solid-state battery technology. These next-gen batteries “generate more power from smaller, light packs” and “recharge much faster than liquid type batteries,” Toyoshima said.
Toyota’s arch-rival Volkswagen Group is also pushing ahead with solid-state battery technology development. The German conglomerate established a joint venture with Stanford University start-up QuantumScape Corporation to accelerate solid-state battery technology.
Advantages like higher energy density, lower space requirements, better rapid charging capability, and greater safety make solid-state batteries an attractive option compared to traditional secondary batteries used for electric propulsion.
We expect to introduce the first mass-produced electrified vehicle using a solid state battery in the first half of 2020’s.Koji Toyoshima, Deputy Chief Officer of Toyota ZEV Factory (Japan), on 7 December 2020.
Toyota starts on-road testing of Solid-State Battery
The first on-road registered Toyota prototype using Solid State Batteries was an LQ. It was registered in August for on-road use, and the video below shows the prototype. Toyota is hoping to explore this new technology to its fullest extent.
Video Source: YouTube/Toyota Motor Corporation
Toyota has briefly shared its learnings from the development process. The company has said that solid-state batteries could have higher output because of the fast movement of ions within them, but there is an issue of short service life. It needs to continue development, particularly of solid electrolyte materials. The Japanese automaker may use solid-state batteries in its hybrid cars. It may do so before it straps them on to pure electric cars.
With the characteristic of fast ion movements and higher tolerance to heat, we are currently aiming on high output and a shorter charging time. For this reason, we believe focusing on the application to HEV is the fastest way to deliver the product to our customers. However, there are still challenges remaining. For example, longer use will result in creating spaces in the solid electrolyte which leads to deterioration.Masahiko Maeda, Chief Technology Officer, Toyota (Media Briefing on Batteries and Carbon Neutrality – 7 September 2021)
Featured image: Toyota